Attempt to fix Python 3.13 on Windows build

Author: michaelbautin

.github/workflows/build.yml

@@ -15,6 +15,12 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
+      - name: Install dependencies with pinned NumPy on Win/Py3.13
+        # This step pins NumPy to a working version ONLY for the configuration
+        # that is known to fail with numpy 2.3.0.
+        if: matrix.os == 'windows' && matrix.python-version == '3.13'
+        run: python -m pip install "numpy<2.3"
+
       - name: Build and install
         run: python -m pip install .